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Do not warn when unique pointers are passed by value 

A unique pointer should only be passed by value or by const reference.
Passing by value means transferring ownership it makes no sense to have a pass by value Warning for unique_ptr

Signed-off-by: Andreas Pokorny <andreas.pokorny@siemens.com>
This commit is contained in:
Andreas Pokorny 2017-07-25 11:17:56 +02:00
parent 0a03bbb320
commit b802b98136
2 changed files with 4 additions and 1 deletions
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2
lib/checkother.cpp
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@ -1379,7 +1379,7 @@ void CheckOther::checkPassByReference()
const Token* const tok = var->typeStartToken();
if (var->isStlStringType()) {
;
} else if (var->isStlType() && Token::Match(tok, "std :: %type% <") && !Token::simpleMatch(tok->linkAt(3), "> ::") && !Token::Match(tok->tokAt(2), "initializer_list|weak_ptr|auto_ptr")) {
} else if (var->isStlType() && Token::Match(tok, "std :: %type% <") && !Token::simpleMatch(tok->linkAt(3), "> ::") && !Token::Match(tok->tokAt(2), "initializer_list|weak_ptr|auto_ptr|unique_ptr")) {
;
} else if (var->type() && !var->type()->isEnumType()) { // Check if type is a struct or class.
// Ensure that it is a large object.

3
test/testother.cpp
View File

@ -1371,6 +1371,9 @@ private:
check("void f(const std::string str) {}");
ASSERT_EQUALS("[test.cpp:1]: (performance) Function parameter 'str' should be passed by reference.\n", errout.str());
check("void f(std::unique_ptr<std::string> ptr) {}");
ASSERT_EQUALS("", errout.str());
check("void f(const std::string::size_type x) {}");
ASSERT_EQUALS("", errout.str());